As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PACK MODE R FLT CREW ATTEMPTED RESET, NO HELP. CAN DUPLICATE ON GROUND. RIGHT PACK TRIPS BETWEEN TWO AND FIVE MINUTES AFTER RESET. ECONOMY COOLING VALVE AND PACKINGS AVAILABLE SFO G2 IN STATION. ADD FAULT: 21-24902 ECONOMY COOLING VALVE WAS R&R. ACCOMPLISHED ECONOMY COOLING VALVE SYSTEM TEST. REF AMM 21-52-31-400-801. TEST PASSED. REMOVED AND INSTALLED ECONOMY COOLING VALVE INSTALLATION. OPS CHECK GOOD REFERENCE: TASK 21-52-31-400-801.